Prime numbers + multiplication principle - math problems
Number of problems found: 7
- Wedding guests
Fifteen wedding guests could not agree on who would stand in the wedding photo. The groom suggested that all possible sets of wedding guests be made in the photographs.
How many three-digit natural numbers are divisible by 25?
- Inverted nine
In the hotel,, Inverted nine" each hotel room number is divisible by 6. How many rooms we can count with three-digit number registered by digits 1,8,7,4,9?
How many different combinations of two-digit number divisible by 4 arises from the digits 3, 5 and 7?
Annie has a total of $ 702. The money must be divided into stacks so that each buyer has the same amounth of dollars. How many options she have?
- No. of divisors
How many different divisors have number ??
How many rectangles with area 8713 cm2 whose sides is natural numbers are?